Thermometer



FIG. 1 is a right front perspective view of a thermometer showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right side being a mirror image thereto;

FIG. 5 is a top plan view thereof, the bottom being a mirror image thereto. 

The ornamental design for a thermometer, substantially as shown and described. 